SL1 4HN

a terminated large user postcode in Slough

Introduced in January 1980, terminated in December 1990

SL1 4HN	Normal (geographic) postcodes	Large user postcodes

The nearby postcodes map only shows currently active postcodes. Postcode markers will cluster if they are close together, which may happen in densly populated built-up areas or where single premises have multiple postcodes.

Coordinates

Latitude: 51.5245 / 51°31'28"N

Longitude: -0.6392 / 0°38'21"W

UTM Reference: 30U 663769 5710798

OS Easting: 494500

OS Northing: 181500

OS Grid: SU945815

Location Encoding

Mapcode Local: GBR F7Z.77K

Mapcode Global: VHFT1.VYX5

Open Location Code: 9C3XG9F6+R8

Maidenhead Locator System: IO91qm35

Demographics

Urban/Rural Indicator: C1

urban city or town
a town or city, surrounded by populated countryside

ONS Population Classification: 4b1

Low-Skilled Migrant and Student Communities
Established Multi- Ethnic Communities
Multi-Generational Migrants

Index of Multiple Deprivation (IMD): 15910 / 32844

5th decile
slightly more deprived

Demographics are based on the LSOA containing this postcode and not necessarily this postcode alone

Sun and Moon Times for SL1 4HN on Thursday 4 June 2026

Nautical twilight begins (First light)	02:53
Civil twilight begins (Dawn)	04:02
Sunrise	04:48
Transit (sun is at its highest)	13:00
Sunset	21:13
Civil twilight ends (Dusk)	21:59
Nautical twilight ends (Nightfall)	23:08

Hours of daylight today	04:18 to 21:43
Hours of darkness tonight (lighting-up time)	21:43 to 04:17
Moon Phase	Waning Gibbous
Moon Sets	06:56
Moon Rises	23:39

For a full sun and moon calendar for SL1 4HN, go to The Time and Place

Elected Representatives for SL1 4HN

United Kingdom Parliament

Constituency

Slough

MP

Tan Dhesi Labour

Slough Borough Council

Unitary Authority ward (UTW)

Northborough & Lynch Hill Valley

Councillors

Martin Carter Labour

Siobhan Dauti Conservative

Elected representative data is updated approximately monthly, so may not include recent by-elections or vacancies.

Government Statistical Services (GSS) data for SL1 4HN

Code	Name	Data Type	Data Theme	Active Since	Data Owner
E00083280		Output Areas	Statistical Building Block	1 January 2009	ONS
E01016494	Slough 003B	Lower layer Super Output Areas	Statistical Building Block	1 February 2004	ONS
E02003409	Slough 003	Middle layer Super Output Areas	Statistical Building Block	1 August 2004	ONS
E05015541	Northborough & Lynch Hill Valley	Electoral Wards/Divisions	Administrative/Electoral	4 May 2023	DLUHC
E06000039	Slough	Unitary Authorities	Administrative	1 January 2009	DLUHC
E12000008	South East	Regions	Administrative	1 January 2009	DLUHC
E14001477	Slough	Westminster Parliamentary Constituencies	Electoral	4 July 2024	LGBC
E23000029	Thames Valley	Police Force Areas	Other	1 January 2009	Home Office
E30000266	Slough and Heathrow	Travel to Work Areas	Other	31 July 2015	ONS
E33037156		Workplace Zones	Census	31 December 2011	ONS
E37000035	Thames Valley Berkshire	Local Enterprise Partnerships	Other	28 October 2010	BEIS
E38000252	NHS Frimley ICB - D4U1Y	Sub Integrated Care Board Locations	Health	1 July 2022	ODS
E40000005	South East	NHS England Regions	Health	1 April 2018	ODS
E43000235	Slough, unparished area	Non-Civil Parished Areas	Census	1 April 2014	ONS
E54000034	NHS Frimley Integrated Care Board	Integrated Care Boards	Health	1 July 2022	ODS
E56000012	Surrey and Sussex	Cancer Alliances	Health	1 September 2016	NHS England
E63012046	Slough	Built Up Areas	Census	17 April 2024	OS
E65000001	England Non-National Park Area	England Non-National Park Area	Census	27 February 2023	ONS
E92000001	England	Country	Administrative	1 January 2009	ONS

The UK Postcode Database